Is Zunimassa Set Dungeon bugged again?

Just did the Zunimassa Set Dungeon 3 times today. Twice I managed to get both objectives done (1. Grasp of the Dead 150 mobs and 2. don’t let any mobs get within melee range) within the time limit and I still didn’t get Mastery of the dungeon. The Mastery objective says I need to kill 219 mobs but there are only 119 in the entire dungeon. Did someone goof and put the wrong number for the objective? Does this need to be patched? What gives?

Completion requires gripping of 150 mobs and not letting anything into melee range. Mastery requires kills of 100% of the mobs (there’s just over 200 of them).